Abstract: A method of creating a meal plan includes receiving user information, determining target amounts of leucine, calories and one or more macronutrients per meal based on the received user information, providing a user interface to allow the user to add food items to a created meal or remove food items from the created meal, determining amounts of leucine, calories and one or more macronutrients provided by food items included in the created meal, displaying a comparison of the amounts of leucine, calories and one or more macronutrients provided by food items in the created meal and the target amounts of leucine, calories and one or more macronutrients per meal on the user interface, updating the displayed comparison each time the user adds a food item to the created meal or removes a food item from the created meal.